An adaptive Level-Set Method with enhanced volume conservation for simulations in multiphase domains

Abstract : Mechanical computations in multiphase domains raise numerous difficulties from the generation of the initial mesh to its adaptation throughout the simulation. All alternatives to mesh adaptation, such as level-set methods, have the well-known drawback of inducing volume conservation issues. In this paper, a moving mesh method is coupled to a topological mesh adaptation technique in order to track moving and deforming interfaces in multiphase simulations, with a robust control of mesh quality. Level-set functions are used as intermediaries to enhance the mesh adaptation technique with a volume conservation constraint, which is compatible both with implicit and with body-fitted interfaces. Results show that this method has the same advantage of permitting important displacements, deformations, and topological changes (coalescence of interfaces, for example) as a standard level-set method, while volume diffusion is drastically reduced
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Soumis le : lundi 29 avril 2019 - 14:52:41
Dernière modification le : vendredi 10 mai 2019 - 16:08:52

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Modesar Shakoor, Pierre-Olivier Bouchard, Marc Bernacki. An adaptive Level-Set Method with enhanced volume conservation for simulations in multiphase domains. International Journal for Numerical Methods in Engineering, Wiley, 2017, 109 (4), pp.555-576. ⟨10.1002/nme.5297⟩. ⟨hal-01327907⟩

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